CN101451738B - Induction heating cooker - Google Patents
Induction heating cooker Download PDFInfo
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- CN101451738B CN101451738B CN2008101850205A CN200810185020A CN101451738B CN 101451738 B CN101451738 B CN 101451738B CN 2008101850205 A CN2008101850205 A CN 2008101850205A CN 200810185020 A CN200810185020 A CN 200810185020A CN 101451738 B CN101451738 B CN 101451738B
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- turbofan
- induction heating
- fan
- mentioned
- cooking instrument
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 143
- 230000006698 induction Effects 0.000 title claims abstract description 89
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000010411 cooking Methods 0.000 claims description 109
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 44
- 229910052742 iron Inorganic materials 0.000 description 22
- 229910052782 aluminium Inorganic materials 0.000 description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 21
- 239000000463 material Substances 0.000 description 13
- 230000020169 heat generation Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Y02B40/126—
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- Induction Heating Cooking Devices (AREA)
Abstract
The invention provides an induction heating cooker. A head plate is on a main body thereof, and the main body is internally provided with: a plurality of heating coils installed below the head plate; a substrate controlling the driving of the plurality of heating coils; a turbofan cooling the heating coils and the substrate; a fan housing covering the turbofan; and a motor driving the turbofan. The invention is characterized in that the operating rotation number of the turbofan is 1800 to 4800 min<-1> when the outside diameter D2 of the turbofan is in the range of 100mm to 214mm.
Description
The present invention is that application number is the dividing an application for the patent application of " induction heating cooking instrument " that 200610153443.X, the applying date be on September 15th, 2006, denomination of invention.
Technical field
The present invention relates to induction heating cooking instrument.
Background technology
Induction heating cooking instrument is that the joule of the vortex flow that produces in the bottom of a pan when utilizing the magnetic line of force that flows high frequency electric and take place on load coil by metal pot heats, and carries out the device of cooking.The time be not only pot in heating, and also produce heating, so with the fan cooling of blowing from the electric substrate of load coil or control load coil etc.
The flow path configuration of existing induction heating cooking instrument utilizes aerofoil fan or multi blade fan to ventilate to electric substrate from the air entry inhaled air of top board, ventilates to load coil again.As the example of this flow path configuration, document 1,2 disclosed examples are arranged, and (patent documentation 1-spy opens the 2004-39263 communique; Patent documentation 2-spy opens the 2002-110329 communique).
In recent years, induction heating cooking instrument is owing to require cooking time shortening etc., and heater coil has the tendency of more increasing outputization, and baking box is for the tendency of the corresponding large-scale meaningful long-pending maximization of cooking product of energy.
The kind of the pot that uses not only can be used the iron pan of energy high efficiency heating, but also can use the low non-magnetic stainless steel pot of the efficiency of heating surface.And, for the corresponding multiple pot of energy, make the pot that not only can use iron, non-magnetic stainless steel system, can also use the product of the kind of aluminum, copper pot, the efficiency of heating surface of aluminum pot is also lower than non-magnetic stainless steel pot.
The bottom that the electric substrate of control heater coil is in heater coil is configured in the remaining space of baking box, follow the height outputization of heater coil, the variation of corresponding pot, the control part product of heater coil increase, and have packing density height, the flowing resistance of electric substrate to become tendency big and that heat loss also increases.And because the maximization of the internal volume of baking box, the configuration space of electric substrate dwindles, thus the tendency that electric substrate has packing density to uprise more.
As mentioned above, the example at patent documentation 1 disclosed induction heating cooking instrument is to utilize aerofoil fan to ventilate to electric substrate and load coil from the cooling air that air entry sucks.Since the packing density height of the machine of induction heating cooking instrument body interior, so flowing resistance is big, and operating point and breaker points are close as shown in figure 11, become big problem thereby have at the occasion noise that utilizes aerofoil fan.
In addition, at the example of the flow path configuration of patent documentation 2 disclosed induction heating cooking instruments, will utilize the multi blade fan that formula vertically is set to ventilate to electric substrate and load coil from the cooling air that air entry sucks.Multi blade fan general since relatively the size of fan can obtain big air quantity and pressure, therefore be widely used in indoor ventilation and use etc.
Yet as shown in figure 12,, therefore the absolute velocity C of impeller outlet is arranged owing to be the direction of rotation of impeller and the consistent forward curved vane of Way out of blade
2Very large characteristic.Because absolute velocity C
2Become the pressure loss Δ P=ρ/2 * C of fan outlet
2 2So, exist flowing resistance to increase, and fan guard inside mobile brought bad influence, perhaps become the problem of local noise source.
Summary of the invention
The present invention solves above-mentioned drawback, a kind of induction heating cooking instrument is provided especially, it improves the configuration free degree of electric substrate portion product, and have height outputization at heater coil, baking box internal volume maximization and also keep high air quantity and low noise, small-sized air-supply to construct under the high-density installation state that causes.
For addressing the above problem, the present invention is a kind of induction heating cooking instrument, possesses top board on main body, is provided with in aforementioned body: a plurality of heater coils that are located at the below of above-mentioned top board; Control the substrate of the driving of above-mentioned a plurality of heater coils; Cool off the turbofan of above-mentioned heater coil and aforesaid substrate; Cover the fan guard of turbofan; And the motor that drives turbofan, in above-mentioned induction heating cooking instrument,
First scheme, the outer diameter D of above-mentioned turbofan
2Ratio D with the overall height H of induction heating cooking instrument
2/ H is 0.34～0.91.
Alternative plan is in the outer diameter D of above-mentioned turbofan
2During for the scope of 60mm～214mm, the running rotation number of turbofan is made as 1800～5900[min
-1].
Third party's case makes the material variation of the rotation number of fan according to the cooking appliance that uses.
Cubic case in the induction heating cooking instrument of third party's case, is made as maximum rotation number when the cooking appliance of heating aluminium, be made as minimum rotation number when the cooking appliance of heating iron material.
The present invention has following effect.
On main body, possess top board, in aforementioned body, be provided with: a plurality of heater coils that are located at the below of above-mentioned top board; Control the substrate of the driving of above-mentioned a plurality of heater coils; Cool off the turbofan of above-mentioned heater coil and aforesaid substrate; Cover the fan guard of turbofan; And in the induction heating cooking instrument of the motor of driving turbofan,
Thus, can realize improving the configuration free degree of the basic portion of electronics product, and have height outputization at heater coil, baking box internal volume maximization and also can keep the induction heating cooking instrument of high air quantity and low noise, small-sized air-supply structure under the high-density installation state that causes.
Make of the material variation of the rotation number of fan according to the cooking appliance that uses, and, when the cooking appliance of heating aluminium, be made as maximum rotation number, when the cooking appliance of heating iron material, be made as minimum rotation number.
Thus, behind the material of identification heating kettle, can be used in efficient well the required air quantity of heat generating components such as cool electronic substrate, coil change, can realize having the induction heating cooking instrument that under the high-density installation state, also keeps high air quantity and low noise, small-sized air-supply structure.
Description of drawings
Fig. 1 is the side that the substantial middle of eddy-current heating portion is on the right cut off.
Fig. 2 is the stereoscopic figure of the induction heating cooking instrument of expression one embodiment of the invention.
Fig. 3 is the exploded perspective view that waits the installation of representing electric substrate and fan from main body dismounting top board.
Fig. 4 is in the induction heating cooking instrument of the first embodiment of the present invention, and expression is by the outer diameter D of above-mentioned turbofan
2The ratio D that constitutes with the overall height H of induction heating cooking instrument
2The figure of/H and air quantity, noise level.
Fig. 5 is in the induction heating cooking instrument of the first embodiment of the present invention, is used for the air quantity of the heat generating components in the excellent in efficiency ground cooling induction heating cooking instrument and the outer diameter D of above-mentioned turbofan
2Graph of a relation.
Fig. 6 is in the induction heating cooking instrument of the first embodiment of the present invention, from the polar plot that flows of turbofan output.
Fig. 7 is in the induction heating cooking instrument of the second embodiment of the present invention, the outer diameter D of turbofan
2Fan duty figure with the combination of rotation number.
Fig. 8 is in the induction heating cooking instrument of third and fourth embodiment of the present invention, about the graph of a relation of the heat loss of the heat generating components in the induction heating cooking instrument of the pot material air quantity required with being used for the cooling of excellent in efficiency ground.
Fig. 9 is in the induction heating cooking instrument of third and fourth embodiment of the present invention, is used for the air quantity required in the excellent in efficiency ground cooling induction heating cooking instrument and the graph of a relation of fan rotation number about the pot material.
Figure 10 is in the induction heating cooking instrument of third and fourth embodiment of the present invention, is used for the air quantity required in the excellent in efficiency ground cooling induction heating cooking instrument and the graph of a relation of turbofan rotation number about the pot material.
Figure 11 is the figure of the general characteristic of expression aerofoil fan.
Figure 12 is the ideograph of many blade fans and turbofan.
Among the figure:
The 1-top board; The 2-main body; 3,4-load coil; The 5-fan; 6,7,8-electric substrate; The 9-suction inlet; The 10-impeller; 11,12-outlet; The 13-fan guard; The 14-fan motor; The 15-air entry; The 16-exhaust outlet; The 17-operating portion; The 18-liquid crystal display; The 19-baking box; 20-baking box exhaust outlet; The big end heater of 21-; 22,23-blow vent; 24-top stream wall; The 25-water-stop sheet; 26-below stream wall; The 27-rake; The 28-curtain-shaped cover member; The 29-discharge outlet; 30-back part stream wall; The 31-sealing ring.
The specific embodiment
Below, according to Fig. 1～Fig. 3 embodiments of the present invention are described.
Present embodiment is that example describes with the induction heating cooking instrument that possesses two eddy-current heating portions, a heater heating part and a baking box.
All structures of the induction heating cooking instrument of one embodiment of the invention at first, are described.Fig. 1 is in induction heating cooking instrument of the present invention, the side sectional view that the substantial middle of eddy-current heating portion is on the right cut off.And the arrow among the figure is represented cooling air.Fig. 2 is the stereoscopic figure of induction heating cooking instrument of the present invention, is the figure of the common representative structure of expression induction heating cooking instrument of the present invention and existing induction heating cooking instrument.Fig. 3 is in induction heating cooking instrument of the present invention, waits the exploded perspective view of the installation of representing electric substrate and fan from main body dismounting top board.
In the bottom of top board 1, the load coil corresponding with the eddy-current heating portion on the right 3, the load coil 4 corresponding with the eddy-current heating portion on the left side are arranged, flow by high frequency electric the magnetic line of force takes place, thereby heating is as the pot of loading.
Back part in main body 2 inside is provided with the fan 5 that uses turbofan, cool electronic substrate 6,7,8 and load coil 3.Fan 5 its structures comprise suction inlet 9, impeller 10, outlet 11,12, fan guard 13, fan motor 14.Represent to use the occasion of 3 substrates and two fan outlets here, as typical example.
The cooling air that sucks from the air entry 15 of main body 2 is imported into the suction inlet 9 of fan 5, give momentum by palintrope that drives by fan motor 14 or impeller 10 with blade, after the direction that impeller 10 intrinsic deflections 90 degree flow, in fan guard 13, turn 90 degrees mobile direction more partially, supply with to electric substrate 6,7,8 from outlet 12, supply with to load coil 3 from outlet 11.Fan 5 and electric substrate 6,7,8 sides also have air entry 15 sides to be separated by fan guard 13.The direction of suction inlet 9 and outlet 11,12 is configured to the direction consistent with the direction of principal axis of fan 5.On the fan guard 13 of the suction passage of suction inlet 9 that separates fan 5 and air entry 15, be provided with the sealing ring 31 that is used for importing the rectification air to suction inlet 9.
Be provided with operating portion 17 in main body 2 fronts, dispose all power switches of machine or load coil 3,4 or hold the output of heater 21 to adjust knob etc. greatly.Forward side disposes liquid crystal display 18 on main body 2, with the output of liquid crystal display sensing heating part, passes on the intensity that adds thermal output to the user.
In above structure, all actions are described.
Pot is placed in the eddy-current heating portion on the right, promptly on the top board 1 of load coil 3 tops on the right, the power switch of making operation portion 17, output adjustment knob that will be corresponding with the eddy-current heating portion on the right is adjusted into suitable output.
So the magnetic lines of force take place to the load coil 3 mobile high frequency electrics on the right from load coil 3 in electric substrate 6,7,8, and pot is heated.Simultaneously, electric substrate 6,7,8 drive fan 5.
Then, describe fan 5 of the present invention in detail.
As one embodiment of the invention, with described Fig. 1 and Fig. 4～Fig. 6 illustrate embodiment 1 before.
Fig. 4 is in induction heating cooking instrument of the present invention, and rotation number one is regularly represented the outer diameter D by above-mentioned turbofan
2The ratio D that constitutes with the overall height H of induction heating cooking instrument
2The figure of/H and air quantity, noise level.Fig. 5 represents, expression is used to cool off the inner required air quantity of induction heating cooking instrument and is used for sending into system's curve of the required static pressure of this air quantity and being used for efficient to induction heating cooking instrument cooling off the air quantity of the heat generating components in the induction heating cooking instrument and the outer diameter D of above-mentioned turbofan well
2Relation.Fig. 6 represents from the vector of the wind flow of turbofan output.The C of Fig. 6
2Expression fan outlet speed, Cm
2The radially composition of expression fan outlet speed, Cu
2The direction of rotation composition of expression fan outlet speed, C
3Expression is from the speed of fan output with the fan guard collision, Cm
3Expression C
3Radially composition, Cu
3Expression C
3The direction of rotation composition.
At first, the short transverse identical with the overall height H of induction heating cooking instrument is made as the fan guard height H
fFig. 4 will be by the outer diameter D of above-mentioned turbofan
2The ratio D that constitutes with the overall height H of induction heating cooking instrument
2/ H is as transverse axis, and the required air quantity and the noise level of this moment of heat generating components that will be used to cool off in the induction heating cooking instrument represented with the longitudinal axis.And, in Fig. 4,5, will when the heating iron pan, be used to cool off the required air quantity of induction heating cooking instrument internal heat generation parts typically and be made as 0.6m
3/ min is used to cool off the required air quantity of heat induced heating device internal heat generation parts and is made as 2.5m when the cooking appliance of heating aluminum
3/ min and representing.This is to be used to cool off each required air quantity, and total heat loss of induction heating cooking instrument internal heat generation parts is 600W when the heating iron pan, and total heat loss of induction heating cooking instrument internal heat generation parts is 2200W when the heating aluminum pot.
The height of induction heating cooking instrument is so because will to be placed in the kitchen in height restricted, be approximately 240mm.Therefore, there is the volume that holds electric substrate little and become the tendency of high-density installation, many in order to make cooling air quantity, the supercharging that needs to increase turbofan.But, the outer diameter D of turbofan
2Can not do than fan guard height H
fAlso big, and the fan guard height H
fNeed do also forr a short time than the height of induction heating cooking instrument.In order to increase the supercharging that in turbofan, produces, the outer diameter D that reduces turbofan is arranged also
2, and the method for increase rotation number.But, if reduce the outer diameter D of turbofan
2, and rotation number is increased, then there is noise to become big worry.Therefore, in the outer diameter D of turbofan
2The scope of optimal external diameter is considered in last existence from the relation of the height of induction heating cooking instrument.
At first, the outer diameter D by above-mentioned turbofan of key diagram 4,5
2The ratio D that constitutes with the overall height H (being made as 234mm typically) of induction heating cooking instrument
2/ H is 0.21 occasion.Here, as shown in Figure 5, the outer diameter D of turbofan
2Be 50mm, turn round at the intersection point A of system's curve and fan duty point.Like this, the supercharging deficiency of fan, required air quantity in the time of can not obtaining heating iron pan.
Then, at D
2/ H is 0.34, is the outer diameter D of turbofan
2Under the state for 80mm, turn round at the intersection points B point of system's curve and fan duty.Required air quantity 0.6m when this B point can obtain heating iron pan
3/ min.But, at D
2When/H is 0.34～0.5 scope, owing between the intersection points B point of system's curve and fan duty and C point, turn round, though so can access air quantity 0.6m required when heating iron pan
3More than/the min, but required air quantity 2.5m can not obtain heating aluminum pot the time
3/ min.
Secondly, at D
2/ H is between 0.5～0.91 the time, owing between the intersection point C of system's curve and fan duty point and D point, turn round, so can access air quantity 2.5m required when heating aluminum pot
3More than/the min.On the other hand, at D
2/ H is 0.91 when above, owing to turn round at the intersection point E of system's curve and fan duty point, so required air quantity 2.5m can not obtain heating aluminum pot again the time
3/ min.
This be because, the outer diameter D of turbofan
2Disappear with the gap of the height of the height of fan guard or induction heating cooking instrument.Polar plot with fan outlet shown in Figure 6 describes.This be because, the outer diameter D of turbofan
2With the gap smaller of the height of the height of fan guard or induction heating cooking instrument, thereby make the fan outlet speed C that blows out from fan
2During colliding, can not fully slow down from fan output and fan guard.
Therefore, it is big that the pressure loss when colliding with fan guard becomes, and can not obtain required supercharging, and air quantity reduces.Have again since with the speed C of fan guard collision
3The fluid change of tune when making collision greatly is big, thereby the noise increase that is related to induction heating cooking instrument makes running undesirable.
As one embodiment of the invention, with described Fig. 6 and Fig. 7 illustrate embodiment 2 before.
Fig. 7 is illustrated in the outer diameter D that makes turbofan
2With the occasion that rotation number changes, be no more than the outer diameter D of the turbofan that noise level 55dB is provided with (A)
2Fan duty with the combination of rotation number.Noise level 55dB (A) is equivalent to feel influences the size of bigger noise to life activity.
In Fig. 7, will when the heating iron pan, be used to cool off the required air quantity of induction heating cooking instrument internal heat generation parts typically and be made as 0.6m
3/ min will be used to cool off the required air quantity of induction heating cooking instrument internal heat generation parts and be made as 2.5m when the cooking appliance of heating aluminum
3/ min and representing.This is to be used to cool off each required air quantity, and total heat loss of induction heating cooking instrument internal heat generation parts is 600W when the heating iron pan, and total heat loss of induction heating cooking instrument internal heat generation parts is 2200W when the heating aluminum pot.
The height of induction heating cooking instrument is so because will to be placed in the kitchen in height restricted, be approximately 240mm.Therefore, there is the volume that holds electric substrate little and become the tendency of high-density installation, many in order to make cooling air quantity, the supercharging that needs to increase turbofan.
But, the outer diameter D of turbofan
2Can not do than fan guard height H
fAlso big, simultaneously, the fan guard height H
fNeed do also forr a short time than the height of induction heating cooking instrument.And, if the outer diameter D of turbofan
2Disappear with the gap of the height of the height of fan guard or induction heating cooking instrument, then the fan outlet speed C that blows out from fan
2Can not fully slow down during colliding from fan output and fan guard, it is big that the pressure loss when therefore colliding with fan guard becomes, and can not obtain required supercharging, and air quantity reduces.Have again since with the speed C of fan guard collision
3The fluid change of tune when making collision greatly is big, thereby the noise that is related to induction heating cooking instrument increases.
In addition, in order to increase the supercharging that in turbofan, produces, the outer diameter D that reduces turbofan is arranged also
2, and the method for increase rotation number.But,, then surpass noise level 55dB (A) if rotation number is increased.Therefore, in the outer diameter D of turbofan
2With exist on the rotation number from the relation of the height of induction heating cooking instrument and the scope that noise is considered optimal turbofan external diameter and rotation number.This as can be known from Fig. 7.
At first, in order to obtain air quantity 0.6m required when heating iron pan
3/ min need turn round at the intersection point F of system's curve and fan duty point.Here, as if the outer diameter D that describes with Fig. 4 by turbofan
2The ratio D that constitutes with the overall height H of induction heating cooking instrument
2/ H surpasses 0.91, and then air quantity reduces, so the outer diameter D of turbofan
2On be limited to 214mm.
In this occasion, can use rotation number 800min
-1Obtain air quantity 0.6m required when the heating iron pan
3More than/the min.On the other hand, reduce the outer diameter D of turbofan in the scope that is no more than noise level 55dB (A)
2, and increase the occasion of rotation number, can be with the outer diameter D of turbofan
2For 60mm, rotation number are 5900min
-1Obtain air quantity 0.6m required when the heating iron pan
3More than/the min.
Next illustrates to be used to obtain air quantity 2.5m required when the heating aluminum pot
3Turbofan external diameter and rotation number that/min is above.In order to obtain air quantity 2.5m required when heating aluminum pot
3/ min need turn round at the intersection point G of system's curve and fan duty point.In outer diameter D with turbofan
2Be made as the occasion of the upper limit of 214mm, can use rotation number 1800min
-1Obtain air quantity 2.5m required when the heating aluminum pot
3More than/the min.
But reduce on the other hand, the outer diameter D of turbofan in the scope that is no more than noise level 55dB (A)
2And increase the occasion of rotation number, can be with the outer diameter D of turbofan
2For 100mm, rotation number are 4800min
-1Obtain air quantity 2.5m required when the heating iron pan
3More than/the min.
Thus, when utilizing the turbofan heating and cooking appliance, the outer diameter D of the turbofan of can both efficient when the material of cooking appliance is iron, aluminum cooling off well
2When being 100～214mm, rotation number is 1800～4800min
-1
As one embodiment of the invention, embodiment 3 is described with Fig. 8～Figure 10.
Fig. 8 is illustrated in the top board that possesses of the present invention on main body, be provided with in aforementioned body: a plurality of heater coils that are located at the below of above-mentioned top board; Control the substrate of the driving of above-mentioned a plurality of heater coils; Cool off the fan of above-mentioned heater coil and aforesaid substrate; And in the induction heating cooking instrument of the motor of drive fan, about the heat generating components in the induction heating cooking instrument of pot material, for example heat loss of electric substrate, coil etc. and the required air quantity of cooling heat generating components with being used for excellent in efficiency.And Fig. 9 represents the rotation number that excellent in efficiency ground cools off the required air quantity of heat generating components and is used to produce this air quantity that is used for about the pot material.In addition, in Fig. 8, the air quantity that will be used to cool off the heat generating components in the induction heating cooking instrument typically when the heating iron pan is made as 0.6m
3/ min, the air quantity that will be used to cool off the heat generating components in the induction heating cooking instrument in the occasion of the cooking appliance that heats aluminum is made as 2.5m
3/ min.This is to be used to cool off each required air quantity, and total heat loss of the heat generating components when the heating iron pan in the induction heating cooking instrument is 600W, and total heat loss of the heat generating components when the heating aluminum pot in the induction heating cooking instrument is 2200W.
As shown in Figure 8, because the cooking appliance and the cooking appliance made of iron comparison efficiency of heating surface made with aluminium material are low, so heat loss is very big.For this reason, be used to cool off electric substrate as the heat generating components in the induction heating cooking instrument, the air quantity of coil has a great difference.Therefore, rotation number is changed, be used to cool off the required MIN air quantity of induction heating cooking instrument with generation.Thus, in the environment that uses induction heating cooking instrument, can realize province's electrification of the use electric energy and the induction heating cooking instrument of low noise space, fan.And, the air quantity that is used to cool off the heat generating components in the induction heating cooking instrument owing to the occasion at the cooking appliance that heats aluminum is a maximum quantity of wind, the air quantity that is used to cool off the heat generating components in the induction heating cooking instrument in the occasion that heats cooking appliance made of iron is minimum air quantity, therefore can be made as minimum rotation number in the occasion of the cooking appliance that heats aluminum, occasion at heating cooking appliance made of iron is made as minimum rotation number, and in the environment that uses induction heating cooking instrument, can realize the low noise space, the use electric energy of fan and province's electrification of induction heating cooking instrument.
In addition, the occasion of turbofan is used in Figure 10 record typically on cooling fan.Figure 10 represents, in the outer diameter D with turbofan
2Be made as the occasion of 120mm, expression is used to cool off the inner required air quantity of induction heating cooking instrument and is used for sending into system's curve of the required static pressure of this air quantity and sucking the characteristic of the fan that is used to cool off the inner required air quantity of induction heating cooking instrument to induction heating cooking instrument.From Figure 10, can calculate, be used to produce the air requirement 0.6m of heating when iron
3The rotation number 1200min that/min is required
-1, the air requirement 2.5m when being used to produce the heating aluminum
3The rotation number 4500min that/min is required
-1And, according to the fan noise characteristic of Figure 10, at 4500min
-1The time can satisfy lower than noise level 55dB (A).Noise level 55dB (A) is equivalent to feel the size of the noise that influence that life activity is brought is bigger.Therefore, even the material of the cooking appliance that uses changes, in outer diameter D with turbofan
2Be made as the occasion of 120mm, at rotation number 1200～4500min
-1Scope, can realize cooling and lower noise environment in the induction heating cooking instrument.
Claims (1)
1. an induction heating cooking instrument possesses top board on main body, is provided with in aforementioned body: a plurality of heater coils that are located at the below of above-mentioned top board; Control the substrate of the driving of above-mentioned a plurality of heater coils; And the fan that cools off above-mentioned heater coil and aforesaid substrate, it is characterized in that,
Said fans comprises suction inlet, turbofan, a plurality of outlet, the fan guard that covers above-mentioned turbofan and the fan motor that drives above-mentioned turbofan, cooling air by will importing above-mentioned suction inlet is after the direction that above-mentioned turbofan intrinsic deflection 90 degree flow, in said fan cover, turn 90 degrees mobile direction more partially, thereby make the direction of above-mentioned suction inlet and above-mentioned a plurality of outlets consistent with the direction of principal axis of said fans, supply with cooling air from above-mentioned a plurality of outlets
The outer diameter D of above-mentioned turbofan
2In the scope of 100mm～214mm, the running rotation number of above-mentioned turbofan is 1800～4800min
-1
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005269518A JP4384104B2 (en) | 2005-09-16 | 2005-09-16 | Induction heating cooker |
| JP2005269518 | 2005-09-16 | ||
| JP2005-269518 | 2005-09-16 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610153443XA Division CN100512571C (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101451738A CN101451738A (en) | 2009-06-10 |
| CN101451738B true CN101451738B (en) | 2011-09-28 |
Family
ID=37940821
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101850205A Expired - Fee Related CN101451738B (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
| CN2008101850192A Expired - Fee Related CN101451737B (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
| CNB200610153443XA Active CN100512571C (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101850192A Expired - Fee Related CN101451737B (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
| CNB200610153443XA Active CN100512571C (en) | 2005-09-16 | 2006-09-15 | Induction heating cooker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4384104B2 (en) |
| CN (3) | CN101451738B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010272459A (en) * | 2009-05-25 | 2010-12-02 | Mitsubishi Electric Corp | Induction heating cooker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624084Y (en) * | 2003-06-18 | 2004-07-07 | 陈辉全 | Electromagnetic oven |
| CN2677783Y (en) * | 2003-05-19 | 2005-02-09 | 黎奋信 | Electromagnet stove |
| JP4245186B1 (en) * | 2007-11-02 | 2009-03-25 | アサヒ機装株式会社 | Sludge scraping device chain device |
-
2005
- 2005-09-16 JP JP2005269518A patent/JP4384104B2/en active Active
-
2006
- 2006-09-15 CN CN2008101850205A patent/CN101451738B/en not_active Expired - Fee Related
- 2006-09-15 CN CN2008101850192A patent/CN101451737B/en not_active Expired - Fee Related
- 2006-09-15 CN CNB200610153443XA patent/CN100512571C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2677783Y (en) * | 2003-05-19 | 2005-02-09 | 黎奋信 | Electromagnet stove |
| CN2624084Y (en) * | 2003-06-18 | 2004-07-07 | 陈辉全 | Electromagnetic oven |
| JP4245186B1 (en) * | 2007-11-02 | 2009-03-25 | アサヒ機装株式会社 | Sludge scraping device chain device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4384104B2 (en) | 2009-12-16 |
| CN101451737A (en) | 2009-06-10 |
| CN1937865A (en) | 2007-03-28 |
| JP2007080757A (en) | 2007-03-29 |
| CN101451738A (en) | 2009-06-10 |
| CN101451737B (en) | 2012-02-08 |
| CN100512571C (en) | 2009-07-08 |
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